Electronics Forum | Tue Oct 21 07:44:44 EDT 2008 | patrickbruneel
Dave, I know that black pad isn't solderable by any alloy. But it's still justified to relate the nickel barrier plated boards to lead free. Before lead free the predominant board plating was HASL and OSP. These platings disappeared with the switch
Electronics Forum | Fri Jun 30 10:51:36 EDT 2006 | samir
Indium Pb paste has always been great but the flux tends to implode on the BGA's (despite many different profile strategies). The Indium Pb-Free is horrible...horrible, and have been kicked out of my lead-free eval. PS-I went to Moonman/Guru link a
Electronics Forum | Tue Feb 13 15:20:12 EST 2007 | billyd
Fellas: I'm having a tough time with voiding with my lead free water soluble paste under my large BGAs. I know some is almost inevitable, but this is more than I'd like. This is with a slope of .9, soak of 60 seconds, above 217 for 85 seco
Electronics Forum | Tue Aug 22 13:05:32 EDT 2006 | Board House
Hi CP, From a PCB manufacturing side, all of our product is Lead free / RoHs compliant if it has a surface finish other than Hot Air. To be ROHS compliant and Able to with stand Lead Free Assembly, this is where the board house would need to switch
Electronics Forum | Tue Oct 31 22:09:25 EST 2006 | davef
The is a serious concern of lead contamination of leadfree solder connections. For background, search the fine SMTnet Archives. For instance: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=30307
Electronics Forum | Thu Sep 25 17:37:54 EDT 2008 | gregoryyork
Best is 7 or 6.5D if you cant achieve 7. In fact this is the best angle for Leaded and Lead Free, so watch the Chinese machines as they come in around 5 and cause loads of bridging problems
Electronics Forum | Fri Feb 11 13:36:40 EST 2000 | Finepitch Services
Jeff, I guess my experience in such issues always took me back to the screen printing process and I only want to bring up that portion of the possible causes to this case. When we talk about coplanarity, the component lead coplanarity first comes t
Electronics Forum | Wed Jul 28 00:13:03 EDT 2004 | NTV
We are seeing un-Reflowed paste along the IC > leads. There is only a very small amount imbedded > in the flux, typically there is about 10 beads > per lead. But on most leads. We are using > no-clean Kester 256 paste (Easy Profile)We have > not
Electronics Forum | Tue Feb 16 21:29:18 EST 2010 | actioncontrols
I predict you will have no problems with your soldering. Remember that all plating is only a few microns thick and quickly washed away by the molten solder. We have used white tin, immersion gold, OSG, etc. for quite a while with leaded solder and
Electronics Forum | Tue Apr 24 02:04:09 EDT 2007 | thulasiraman
please send me a indium type 4 solder paste leaded profile
winsouce.jpg)